:root {
  color-scheme: dark;
  --bg: #0b0d12;
  --bg-alt: #12151c;
  --fg: #e8eaf0;
  --fg-dim: #9aa2b1;
  --accent: #5b8cff;
  --border: #232734;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.55;
}

main {
  max-width: 46rem;
  margin: 0 auto;
  padding: 4rem 1.5rem 3rem;
}

header {
  text-align: center;
  margin-bottom: 3rem;
}

h1 {
  font-size: 2.75rem;
  margin: 0 0 0.5rem;
  background: linear-gradient(135deg, var(--fg), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tagline {
  color: var(--fg-dim);
  font-size: 1.1rem;
  margin: 0;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}

.pillar {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
}

.pillar h2 {
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
  color: var(--accent);
}

.pillar p {
  margin: 0;
  color: var(--fg-dim);
  font-size: 0.92rem;
}

section {
  margin-bottom: 2.5rem;
}

h2 {
  font-size: 1.3rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

.button {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  background: var(--accent);
  color: #050608;
  font-weight: 600;
  text-decoration: none;
}
.button:hover { opacity: 0.9; }

.hint {
  color: var(--fg-dim);
  font-size: 0.85rem;
  margin-top: 1rem;
}

.status p {
  color: var(--fg-dim);
}

footer {
  text-align: center;
  color: var(--fg-dim);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
}

code {
  background: var(--bg-alt);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.85em;
}